#2 Samoa Joe
In case you didn't know, Samoa Joe and John Cena actually trained together in California back in the day. They'd go to the gym, hang out, and Cena even went around to Joe's house on a number of occasions.
If that in itself isn't enough to convince you that they can create a great feud together, then nothing is. In terms of options, Joe vs Cena is one of the best that the WWE has right now.
Cody Rhodes' uncle is a WWE Hall of Famer. More details HERE.
The promos between the two would be fantastic, the in-ring work would be stellar and their staredown alone would be worth the price of admission.
Joe is one of the most intimidating figures in the history of the business due to his facial expressions alone, and the history these two men have together would provide the perfect blueprint for a money making match at the biggest event of the year.
We conclude with the one man that has eluded John for so long.